Tire tread



FIG. 1 is a front view of a tire tread showing my new design;

FIG. 2 is an enlarged cross sectional view taken from line 2—2 in FIG. 1;

FIG. 3 is an enlarged cross sectional view taken from line 3—3 in FIG. 1; and,

FIG. 4 is an enlarged cross sectional view taken from line 4—4 in FIG. 1. 

The ornamental design for a tire tread, as shown and described. 